16437 has 4 divisors (see below), whose sum is σ = 21920. Its totient is φ = 10956.

The previous prime is 16433. The next prime is 16447. The reversal of 16437 is 73461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16437 - 2² = 16433 is a prime.

It is a d-powerful number, because it can be written as 1 + 6² + 4⁷ + 3² + 7 .

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 16437.

It is not an unprimeable number, because it can be changed into a prime (16433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2737 + ... + 2742.

It is an arithmetic number, because the mean of its divisors is an integer number (5480).

2¹⁶⁴³⁷ is an apocalyptic number.

It is an amenable number.

16437 is a deficient number, since it is larger than the sum of its proper divisors (5483).

16437 is an equidigital number, since it uses as much as digits as its factorization.

16437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5482.

The product of its digits is 504, while the sum is 21.

The square root of 16437 is about 128.2068640908. The cubic root of 16437 is about 25.4257741556.

Adding to 16437 its reverse (73461), we get a palindrome (89898).

The spelling of 16437 in words is "sixteen thousand, four hundred thirty-seven".